Make ramdisk_available.

Test: pass
Bug: 147347110
Change-Id: If00a2f7c12100c76c25da4501ae40fa02e44634d
diff --git a/Android.bp b/Android.bp
index 2c651c5..4e30d2c 100644
--- a/Android.bp
+++ b/Android.bp
@@ -55,6 +55,7 @@
     name: "libc++_static",
     defaults: ["libc++ defaults"],
     vendor_available: true,
+    ramdisk_available: true,
     recovery_available: true,
     native_bridge_supported: true,
     srcs: [
@@ -111,6 +112,7 @@
         enabled: true,
         support_system_process: true,
     },
+    ramdisk_available: true,
     recovery_available: true,
     whole_static_libs: ["libc++_static"],
     stl: "none",